Frequencies for first 10,000 rows of age_cod variable in demo2010q3 dataset :

       Unit |
abbreviatio |
      n for |
  patient's |
        age |      Freq.     Percent        Cum.
------------+-----------------------------------
        DEC |         12        0.12        0.12
         DY |         83        0.83        0.95
        MON |        114        1.14        2.09
         WK |          6        0.06        2.15
         YR |      9,785       97.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Dec 2015